19054815077 has 2 divisors, whose sum is σ = 19054815078. Its totient is φ = 19054815076.

The previous prime is 19054815071. The next prime is 19054815079. The reversal of 19054815077 is 77051845091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18183443716 + 871371361 = 134846^2 + 29519^2 .

It is a cyclic number.

It is not a de Polignac number, because 19054815077 - 2³⁴ = 1874945893 is a prime.

Together with 19054815079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19054815071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9527407538 + 9527407539.

It is an arithmetic number, because the mean of its divisors is an integer number (9527407539).

Almost surely, 2^19054815077 is an apocalyptic number.

It is an amenable number.

19054815077 is a deficient number, since it is larger than the sum of its proper divisors (1).

19054815077 is an equidigital number, since it uses as much as digits as its factorization.

19054815077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 47.

The spelling of 19054815077 in words is "nineteen billion, fifty-four million, eight hundred fifteen thousand, seventy-seven".